Marijuana use for treating diseases. Use of marijuana which is whole, unprocessed marijuana plant or its necessary extracts can be used to treat different kinds of diseases. Use of marijuana plant has not been adopted in the U.S by Food and Drug Administration. Use of scientific study of the chemicals in marijuana, called cannabinoids, has led to two FDA-approved medications that contain cannabinoid chemicals in pill form. Continued research may lead to more medications. Because the marijuana plant contains chemicals that may help treat a range of illnesses and symptoms, many people argue that it should be legal for medical purposes. In fact, a growing number of states have legalized marijuana for medical use. Is not Marijuana is not an approved medicine. It is a requirement for FDA to have carefully conducted studies that are in hundreds and thousands of human subjects to identify the advantages and risks associated with possible modification. There is no proof to show that marijuana contains more advantages than disadvantages as at this moment. There is yet some unconfirmed results to show that there is no association with the decreased prescription opioid use and overdose deaths. For example, one NIDA-funded study suggested a relationship between medical marijuana legalization and fewer overdose deaths from prescription opioids. Marijuana contains an element known as delta-9-tetrahydrocannabinol that alter the functioning of the mind and is also linked to Cannabinoids. There are more than 100 cannabinoids contained in marijuana. Numerous cannabinoids have been manufactured in the lab by the scientists together with illegal producers. Cannabinoids when used in the way is not supposed to be used it has led complications to the health since it is powerful. There is increasing interest in the marijuana chemical cannabidiol (CBD) to cure certain conditions such as childhood epilepsy, a disorder that causes a child to have violent seizures. Scientists have developed interest in marijuana and are now mixing marijuana plant with CBD in oil for treatment reasons. Since this drugs are not intoxicating, they cannot be used for recreational purposes. The body also produces its cannabinoid chemicals. They play a role in regulating pleasure among others. Use of marijuana as a drug in some states it is a new practice. For people who have weakened body due to age and illnesses the way they react to marijuana I s not yet known. Marijuana has adverse effects on older individuals and people with cancer and Hiv and AIDS. Currently, the two primary cannabinoids from the marijuana plant that is of medical interest are THC and CBD. THC can improve appetite and reduce nausea. THC may also decrease pain, inflammation (swelling and redness), and muscle control problems. Many researchers, including those give funds by the National Institutes of Health (NIH), are continuing to establish the possible uses of THC, CBD, and other cannabinoids for medical treatment.